Abstract:

This is the article brings the brief about the today’s and future computer storage options. Most of ours using computers and systems, but we do not know much more details about the storage and storage options existing today. For those people, you can easily get to know about the brief introduction and overview of nowadays storage options – personal and enterprise from this article.

Hard Disk Drive:

If anyone hears about computer storage, suddenly he might have think about this hard disk only. It is a common storage option, most of the PC’s have. After 1990, the evolutions of hard disk become more and more. So it easily occupies our PC’s without any competitions of other storage options. Compare to other storage options this is the smartest storage, suitable for personal computers. There are two main types of hard disks are used in today’s systems. They are,

o Magnetic Hard Disks
o Solid State Disks

Magnetic Hard Disks:

Magnetic Hard Disk Drive is a digital data storage device that reads and writes data via magnetization changes of a magnetic storage disk. This includes one or more randomly accessible rotatable storage media, or disks. Nowadays magnetic hard disks are there in market up to terabytes. Yes, a single hard disk drive has that much memory like a big storage server. The first commercial magnetic HDD introduced by IBM in 1956 having 5MB storage. But last year Hitachi introduced 1TB magnetic HDD. This year 2008, Seagate announced 1.5 TB HDD for personal and enterprise purposes. This HDD are having data transfer rate is nearly 16 to 20 Mb/s.

Solid State Disks:

The design of solid-state disk starts with combining the each block like Flash memory, Memory controller, RAM, RAM Controller, Processor and Host etc., M-Systems introduced first flash-based solid-state drives in 1995. (SanDisk acquired M-Systems in November 2006). Since then, flash based SSDs demands high in military and aerospace industries, as well as other mission-critical applications. Nowadays in SSD, Flash is used as a permanent storage and RAM is used as a temporary storage between Flash and processor to increase the performance.

It’s very suitable for small hand held systems and note books, because it does not have moving parts, requires less power, Host data transfer rate of up to 3Gb/s and silent operation. Up to 2007 middle only 64GB (Samsung & SanDisk) solid-state drives are there in the market with in the size that is compatible with notebooks. In this year Samsung announces a super-fast 256 GB, 2.5-inch solid-state drive. ‘Super Talent’ has announced the world’s thinnest 256 GB 2.5-inch SSD drive. Toshiba also launched 3 MLC flash SSD families with SATA interfaces.

Optical Disks:

The main uses of optical storage disks are content exchange, backup and archiving and not for primary storage. It’s having capacity from 300 MB to 30 GB. Before the evolutions of Optical Storage Disks, the Magnetic floppy disks are used for data exchange and for small storages. Because of the very little storage (1.44 MB) and small life period of floppy, the optical disks had overtaken that. There are four main commercial types of optical disk’s are there for present day usage. They are,

o Laser Disks
o Compact Disks (CD)
o Digital Versatile Disks (DVD)
o Blu-Ray Disks (BD)

Laser Disks:

The laserdisc was the first optical storage medium used for commercial purposes, particularly for the movie industry. Paul Gregg invented the laserdisc technology in 1958, making use of a transparent disc. Laserdiscs are famous in 80′s for audio songs and although the VHS (Video Home System) cassettes and the CD/DVD format has overtaken the Laserdisc in usage. It looks 30 centimeters in diameter and it is made up of two single-sided discs. Laserdisc is actually an analog format unlike CDs or DVDs which are digital. Now Laser disks doesn’t have any market, but still some people are using this to hear old songs.

Compact Disks:

The most common form of optical storage is the Compact Disk (CD). Even with the arrival of other more powerful optical media, CDs remain a popular way for industries to package software, games, music, and movies. These discs provide low-cost and easy-to-use back-up for and physical transfer of data files. Normally compact disks are coming in two ways. One is CD-R (one time write and more number of reads) and CD-RW (More number of read and writes). A standard CD has a capacity of about 74 minutes of standard CD audio music and holds about 700 MB. But actual capacity depends on the format of writing.

Digital Versatile Disks:

This is the improved form of compact disks, commonly known as DVD. It has another expansion like Digital Video Disks also. It also contains DVD-R and DVD-RW separation like the above. A standard DVD offers 4.7 GB (Single Layer) / 8.5 GB (Dual Layer) storage. But it looks similar like CD. We can read/write the CDs in the DVD Writer, but CD writer won’t read the DVD.

Blu-Ray Disks:

It is the next-generation optical disks, able to hold high-definition video and other high-density storage. A single-sided Blu-ray disk can hold 25 GB of storage, while a dual-sided one can store 50 GB. The Blu-ray disk’s size is similar to that of the CD and the DVD – 120 mm in diameter. It uses 405 nm wavelength of laser, so only it named as a Blu-ray disk. It has 54 Mbps transfer rate is superior to both the CD (150 Kbps) and the DVD’s (11.1 Mbps). Blu-ray discs are more expensive and slower to manufacture, mainly used for Game storage like play stations.

RAID:

It is expanded like Redundant Array of Independent Disks. It is a technology that employs the simultaneous use of two or more Hard disk drive to achieve greater levels of performance, reliability, and/or larger data volume sizes. A RAID distributes data across several physical disks. There are three different types of RAID concepts. They are,

o Software RAID

o Hardware RAID

o Firmware/driver based RAID

Tape Storage:
The main usage of tape storage is offline storage and backup for primary storage. Today’s magnetic tape is most commonly packaged in cartridges and cassettes. Tape drives can be connected to a computer with SCSI commonly and Fibre Channel, FICON, ESCON, parallel port, IDE, SATA, USB, FireWire or other interfaces also. It has the following important benefits.

o It offers lowest cost per megabyte of all storage media options.

o Extremely high capacity per cartridge.

o Portable

The same like it has some limitations also.

o Very slow operation (both read and write)

o Relatively short operational life compare to other storage media

o Subject to deterioration and environmental hazards

The difference between tape data storage and disk data storage is that tape is an Sequential access medium while disk is a random access medium. Nowadays Tape Storage is used to store data’s, which doesn’t need, but should have a Backup like Hospital passed away patients record.

Network Attached Storage:

It is commonly known as NAS, used for enterprise storage as a server. These devices contains embedded processors that run some sort of operating system or microprocessors that understands networking protocols and is optimized for particular tasks, such as file service and network backup etc., NAS is an ideal choice for organizations looking for a simple and cost-effective way to achieve fast data access for multiple clients at the file level. Some important benefits of NAS are listed below.

o Files are easily shared among users at high demand and performance

o Files are easily accessible by the same user from different locations

o Demand for local storage at the desktop is reduced

o Storage can be added more economically and partitioned among users-Highly scalable

o Data can be backed up form the common repository more efficiently than from desktops

o Multiple file servers can be consolidated into a single managed storage pool

Storage Area Network:

It is commonly known as SAN. It is a high performance storage network that transfers data between servers and storage devices, separate from the local area network. For a normal person these two, SAN and NAS are giving big confusion. These two are used as server storage but the main difference is, NAS uses LAN but SAN won’t use it. Some advantages of SAN over NAS are listed below.

o Superior Performance

o Reduces Network bottlenecks

o Highly Scalable

o Allows backup of storage devices with minimal impact on production operations

o Flexibility in configuration.

Online Backup:

The above said methods are convenient and quick, and many offer plenty of inexpensive storage space. For Enterprises, the big problem is coming at the time of disaster, hurricane, earthquake, fire occurs, both the computer and the data backup servers could be destroyed. There’s also the problem of theft, of course. But online backup services, which save the most critical computer files on a secure, off-site server over the Internet.

Online Backup means remote Backing up Services. That is taking backup via the Internet to a remote location can protect against some worst-case scenarios mentioned above. A drawback of this an Internet connection is usually substantially slower than the speed of local data storage devices and it also has the risk associated with putting control of company secrets data in the hands of a third party.

Linux VPS is used extensively by quite a lot of online business owners and website developers today. While in the past the options had been limited to just shared server or dedicated server, VPS today is widely used. VPS offers all the benefits of a dedicated server without the high costs that usually come with a dedicated server. You would be able to enjoy better flexibility, control and performance with this new type of hosting service. However, even when you use this hosting service it would be important for you to learn a few ways in which you can increase its effectiveness and work better for you.

For every server, the system resources would be limited. Clients would want their server to be responsive and fast as much as possible. The tips that have been given below will help your servers work effectively.

Configure MySQL

One of the best ways to expand your available RAM for Linux VPS is by installing MySQL cache of the right size. If your server instance is using up too much of the memory, then you can decrease the size of the cache and try again. If it is slower due to the larger requests, then you can try a cache of a larger size. You can experiment with different sizes to see which one works the best for your needs.

Disable Control Panels

Another great tip would be to disable your control panels for improving the performance of the server. Most people would like to use some of the most popular and well known control panels like Plesk and Cpanel. However, if you want to have more memory and want your resources to be free, then you should use the control panels only when needed. You will only need to reinstall them with the help of shell prompt or by running a PHP script. This would provide you as much as 120MB free RAM.

Disable All Unwanted Features

For your Linux VPS, you should disable all the features that you do not need. Remove plug-ins, modules and any features that you might not be using currently. When you disable the plugins or the modules that you don’t require, it would automatically decrease the memory that the server needs for software like Apache. It would provide you more resources for software that you require more and would use more often.

One of the best ways to make your server responsive is to disable your system services that are used unnecessarily. The services that are not used will consume a lot of CPU space and RAM and will also make the server unsecured. If you follow these simple tips, your Linux VPS would work more effectively, faster and would be more responsive.

When it comes to purchasing a house, many people believe they know the basics but not the detailed steps to buying a home. This article can help those individuals in need of a guiding hand who are searching for and ready to begin purchasing a house. While most new buyers may turn to real estate agents for home buying assistance so they can be guided and counseled through the process of purchasing a house, others just want to get a good overview of the things they are going to encounter, and the following information will be a big help along the way.

Identify what type of home you want. This is the first of the initial steps to buying a home and is highly important. Ideally, what you want to consider at this stage is what will suit you best. Among the many choices you might be facing, you need to consider the number of bedrooms and bathrooms for all the family members, proximity to work and schools, school districts, amenities that a home and the area will provide, the area’s safety, and maybe even the percentage paid for taxes. The better you are able to identify what you want when purchasing a house, the easier it will be to drill down when searching and not waste your time in homes that will not interest you. You will have a targeted focus that gets you straight to the home you want to live in. Get financially pre-qualified. This is one of the crucial steps to buying a home that needs to be done! It is a relatively quick process of understanding your financial well-being and seeing how much of a house you can afford. It is important to have this done by a financial institution that does mortgages because they will be able to look at your entire financial picture. The more accurately this is done, the easier the financing will be when you begin purchasing a house. Begin your home search! Now that you know where you stand financially and know what type of home you want, begin your search through the many properties available in your area. I strongly encourage people to work with real estate agents as they are able to give you great guidance as to some of the things you might be considering and looking for in a property. Also, they have access to a lot more information – from details and helpful steps to buying a home to layouts and pictures – much more than you would be able to acquire yourself. Make an offer. Once you’ve found a home that matches your search criteria and budget, one of the next steps to buying a home is drafting a written contract (offer letter) to the seller with the purchase price you are willing to pay, any terms and conditions you are looking for in the deal, and remaining responsibilities by both parties (buyer and seller) so that a sale can be executed and the process of purchasing the house can begin. This important stage in purchasing a house is another great reason why I support and encourage the use of agents. Here they will be able to help you with information on how comparable homes in the area have done. This will ensure that your offer is adequate and that you do not have to pay more than what would be needed. Real estate agents also have experience drafting offer letter contracts that may be filled with legal terminology and can often be confusing. Negotiate and agree to terms with the seller. One of the next big steps to buying a home is negotiation. If your offer matches all the conditions that the seller was seeking, the offer will probably be accepted. Realistically, this rarely happens, and negotiations between both sides will take place once the seller counteroffers. If you’re still interested in purchasing the house, you may have to negotiate price, financing terms, repairs, closing and move-in dates, and other things that each party may find important before agreeing to the purchase details. Get things ready for day of purchase. Since many home buyers finance homes, lending institutions will require that different things be done to ensure they are not lending on a house that might not be livable or have the ability to be resold. That is why appreciations and inspections are requested by the banks during the process of purchasing a house. In addition, banks want to protect the investment made by both parties, so they will ask for home insurance to be secured and the title from the seller to be clear. Close. At last! One of the final steps to buying a home is here and the day that everyone has been waiting for. Both sides will meet at a title or attorney’s office to make sure financing is exchanged and the title to the property is provided to the new buyer. Financing details sometimes vary between lenders, but they will be able to guide you with final closing statements, additional money you might owe, and details of how the transaction is being processed. Move. Although this is one of the steps to buying a home that is outside of the actual buying process, I thought it was important to include because it is still part of the new home experience. Whether you are moving things yourself or using a moving company, there are many things to be considered for your next move and that, done ahead of time, will prevent many headaches and reduce the anxiety that goes with moving.

It’s hard to believe that it is almost 15 years since the arrival of the original Adidas Predator Football Boot, which has gone on to become the boot of choice for such top athletes as David Beckham, Steven Gerrard and Jonny Wilkinson.

The first version of the Predator was designed by ex-Liverpool striker Craig Johnson, and was created to increase the contact between football and boot on impact, to provide greater ball control. His change to the boot’s outstep also allowed players to add spin and after touch. Adidas Predator Football boots were heavily marketed, and celebrity endorsements throughout the 1994 FIFA World Cup ensured that the boots received the attention they deserved. The Rapier came out the following year, and was the only of Adidas’ Predators to be released outside of a World Cup or European Championship.

It is not only the distinctive style of the Adidas Predator’s that has garnered them so much attention, but also the technical innovations in boot technology. The Adidas Predator Touch (released immediately prior to Euro 1996) was the first boot, for example, to have moulded studs rather than the traditional detachable studs, something that has since become an option for most football boots. The Predator Precision took the idea of different studs further by providing removable Traxion studs, with each designed for a different pitch condition.

The Adidas Predator Mania, released in 2002, although discontinued, is widely regarded as being the best football boot ever made and second hand boots can sell for well over

Within the UK there are over 500 telemarketing companies. These are divided into inbound and outbound call centers. Due to volume, most inbound call centers are now sent over seas, due to lower employment costs, however there are still many telemarketing agencies that do offer UK based inbound call centers.

So the question is, with so many telemarketing companies around, how would it be possible to find the right one for our company? Well, firstly looking at the criteria needed to ‘whittle’ down the numbers and get down to a more sensible number.

1/ Does the company have the right number of ‘seats’ for the calling?

2/ Does the company have the experience of my industry?

3/ How much are they going to charge me?

4/ Will they work on commission?

5/ Can they guarantee results?

Telemarketing agencies vary in size within the UK, from small consultancies or freelancers doing contract work up to large call centers of 100+ seats.

Most telemarketing companies do have a variety of experience covering all industries – it is just a case of picking the right one. It is beneficial to use one that does have experience, as there will be less of a learning curve and results will be quicker – meaning less money spent.

Most charge a day rate for their work (which can range from around £150 up to around £600) or a standard monthly charge or retainer. This will be based on the number of agents calling on a campaign and also the level of the callers experience (a junior caller or more senior experienced caller).

Most telemarketing companies will not work on commission however there are some that will consider a reduced cost per day with a commission based on their success. There are a couple of UK agencies that do charge per appointment or per call made.

At the end of the day, sales is sales, and results cannot always be guaranteed, however discussing achievement levels with an agency is always good, as a way to monitor progress and assess how effective the agency is at the job.